Table of Contents
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FOUR CYCLE ENGINE FOR PUMP SYSTEM
It is of vital importance, before attempting to operate
your engine, to read the general 'SAFETY
INSTRUCTIONS AND WARNINGS' section on pages
2-6 of this booklet and to strictly adhere to the advice
contained therein.
●
Also, please study the entire contents of this
instruction manual, so as to familiarize yourself
with the controls and other features of the engine.
●
Keep these instructions in a safe place so that you
may readily refer to them whenever necessary.
●
It is suggested that any instructions supplied with
the aircraft, radio control equipment, etc., are
accessible for checking at the same time.
2-6
7
8
9
10-13
14-16
ENGINE EXPLODED VIEW & PARTS LIST
17-18
19
20
21
22
1
CONTENTS
24-26
27-28
29-30
31-33
34-35
36-37
23
38
39
40
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Table of Contents
Related Manuals for O.S. engine FSA-81-P
Summary of Contents for O.S. engine FSA-81-P
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Page 1: Table Of Contents
CONTENTS SAFETY INSTRUCTIONS AND WARNINGS CARE OF FUEL PUMP & REGULATOR ABOUT YOUR O.S. ENGINE STARTING 24-26 NOTES WHEN APPLYING AN ELECTTRIC STARTER RUNNING -IN ("Breaking-in") -
Page 2: Safety Instructions And Warnings About Your O.s. Engine
As owner, you, alone, are responsible for the safe operation of your engine, so act with discretion and care at all times. If at some future date, your O.S. engine is acquired by another person, we would respectfully request that these instructions are also passed on to its new owner. - Page 3 NOTES This engine was designed for model If you remove the glowplug from the engine aircraft. Do not attempt to use it for any and check its condition by connecting the other purpose. battery leads to it, do not hold the plug with bare fingers.Use an appropriate tool or a Mount the engine in your model securely, folded piece of cloth.
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Page 4: Notes When Applying An Electtric Starter
NOTES Adjust the throttle linkage so that the engine For their safety, keep all onlookers stops when the throttle stick and trim lever (especially small children) well back (at on the transmitter are fully retarded. least 20 feet or 6 meters) when preparing Alternatively, the engine may be stopped by your model for flight. -
Page 5: About The Engine
ABOUT THE ENGINE This is a FS (Alpha) series of the single STANDARD ACCESSORIES cylinder overhead valve four cycle engine Glowplug TypeF equipped with a fuel pump system. It offers broad power band to suite a variety models F-5030 Silencer Assembly types. -
Page 6: Before Starting
BEFORE STARTING Tools, accessories, etc. The following items Warning: are necessary for operating the engine. Make sure that the propeller is well balanced. An unbalanced propeller and/or Propellers spinner can cause serious vibration which may weaken parts of the airframe or affect The choice of propeller depends on the design the safety of the radio-controlled system. - Page 7 Fuel Tank Electric Starter and Electric Starter Starter Battery A fuel tank of approximately 320cc capacity is suggested. Required when starting This allows around 14 minutes flying time, the engine. 12-Volt lead-acid battery dependent upon the type of fuel used, the size of propeller and on the amount of full-throttle to O.S.
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Page 8: Installation
INSTALLATION It is suggested to use as heavy and rigid as possible engine mounting for highest performance and safe running. Conventional wooden mounting beams should be of rigid hardwood and of at least 15mm or 5/8-in square section. Use at least 3.5mm steel screws, such as Allen type, with locknuts, for bolting the engine to the bearers.. -
Page 9: Installing Silencer
THROTTLE LINKAGE NEEDLE-VALVE EXTENSION The needle-valve supplied with this engine is Before connecting the throttle to its servo, designed to incorporate an extension so that, make sure that the throttle arm and linkage when the engine is enclosed within the safely clear any adjacent part of the airframe fuselage, the needle-valve may be adjusted structure, etc., as the throttle is opened and... -
Page 10: Fuel Tank & Lines
The exhaust outlet of the silencer can be rotated to any desired position in the following manner: Assembly screw Loosen the locknut and assembly screw. Set the exhaust outlet at the required posi- tion by rotating the rear part of the silencer. Re-tighten the assembly screw, followed by the locknut. -
Page 11: Propeller
PROPELLER There is a risk, particularly with powerful four- stroke engines, of the propeller flying off if the prop loosens detonation Propeller washer ("knocking") in the combustion chamber when the engine is operated too lean, or under an excessively heavy load. Locknut Propeller nut Obviously, this can be very hazardous. -
Page 12: Mixture Controls
MIXTURE CONTROLS TYPE 61R CARBURETTOR Two mixture controls are provided on this Carburetor. Throttle Lever Mixture Control The Needle Valve Valve When set to produce maximum power at full throttle, this establishes the basic fuel/air mixture strength. The correct mixture is then maintained by the carburetor's built-in automatic mixture control system to cover Rotor Guide... -
Page 13: Starting
STARTING The FS -81-P is not equipped with manual Element glows when energized. choke controls, as it is intended for use Pliers with an electric starter only. A high-torque electric starter not only makes starting the engine easier, it dispenses with the need for a choke valve by turning the engine over fast enough to Replace the plug when the element does not glow or is... -
Page 14: Running-In ("Breaking-In")
Now disconnect current to the glowplug Make sure that the and gradually close the needle-valve so direction or rotation that the rpm increases. is correct. Make adjustments to the needle in small steps. Abrupt changes at this stage are likely to cause the engine to stall. -
Page 15: Idle Mixture Adjustment
WARNING: With each successive flight, close the When ground running the engine, avoid needle-valve very slightly until, at the end of dusty or sandy locations. If dust or grit is about 10 flights, the needle is set for full drawn into the engine, this can have a power. -
Page 16: Care And Maintenance
Valve clearances are correctly set before serves you well in regard to performance, any O.S. engine leaves the factory and, in reliability and long life. normal use, will seldom require adjustment. However, if, after a considerable amount of... - Page 17 Install an in-line fuel filter between the tank Do not close the needle-valve and mixture and carburetor to prevent dirt and foreign in control valve too far as this will cause a lean the tank from entering the carburetor. setting and over heating of the engine. This can, in turn, create nitromethane oxide Clean these filters periodically.
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Page 19: Carburetor Exploded Views
CARBURETOR EXPLODED VIEW S.M3X3 N.+M3x22 S.M3x3 N.+M3x6 Type of screw C...Cap Screw M...Oval Fillister-Head Screw F...Flat Head Screw N...Round Head Screw S...Set Screw CARBURETOR PARTS LIST Code No. Description 29481900 Needle Valve Assembly 29481970 Needle Assembly 24981837 "O" Ring (2pcs.) 26381501 Set Screw 27381940... -
Page 20: O.s. Genuine Parts & Accessories
O.S. GENUINE PARTS & ACCESSORIES IN-COWL EXHAUST BOOSTER TERMINAL KIT RADIAL MOTOR MOUNT HEADER PIPE (72200130) (71905030) M11 IN-COWL HEADER PIPE PROPELLER LOCKNUT SIDE 60D (72109680) SET FOR SPINNER 5/16"-M4 (45910200) M11 IN-COWL HEADER PIPE INVERTED 80D (72109690) 5/16"-M5 (45910300) Needle Valve NON-BUBBLE VALVE ADJUSTING... -
Page 21: Memo
MEMO 6-15 3-Chome Imagawa Higashisumiyoshi-ku Osaka 546-0003, Japan TEL. (06) 6702-0225 URL : http://www.os-engines.co.jp FAX. (06) 6704-2722 Copyright 2009 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan. 60092240 110902...